Build a complete REST API

Combine the concepts into a practical backend project. A good portfolio project can include user CRUD, validation, authentication, database persistence, centralized errors, logging, and automated tests.

Suggested architecture

• Express handles HTTP.
• Controllers coordinate requests.
• Services contain business rules.
• Database modules handle persistence.
• Middleware handles validation and authentication.

Deep dive

Recommended project milestones

1. Create the Express application.
2. Add health and version endpoints.
3. Connect the database.
4. Create migrations/tables.
5. Implement CRUD.
6. Add validation.
7. Add authentication.
8. Add authorization.
9. Add tests.
10. Add logging and production configuration.